bulwark

/ˈbʊlwərk/
verb
  1. To protect or strengthen with a bulwark or as if with a bulwark.
    • The town bulwarked its harbor with a new seawall.
    • She bulwarked her argument with solid evidence.
    • They bulwarked the camp against the coming storm.
noun
  1. A strong wall or barrier built for defense, especially against attack or the sea.
    • The old city walls served as a bulwark against invaders.
    • The castle's stone bulwark protected it from enemy arrows.
    • They built a bulwark of sandbags to hold back the floodwaters.
  2. Something that protects or defends against danger, difficulty, or harm.
    • A strong education is a bulwark against poverty.
    • The constitution acts as a bulwark for citizens' rights.
    • Community support can be a bulwark against loneliness.
Antonyms
What does "bulwark" mean? | whatsthatwordmean | whatsthatwordmean